[all variants] test btrfs compress mount option

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http://ubuntuforums.org – hi, i installed ubuntu 11.10 after spending some time with Arch and Gentoo (DIY distro sounds good but theres always something to overlook/forget) anyways i have BTRFS / and /home partitions (ext2 /boot) and just added compress=lzo to my fstab to see if there was a noticeable performance gain (after a few updates all the files should have been modified and therefor compressed right?) so my options look something like this: defaults,compress=lzo,subvol=@ is there a way to test if the new mount option has taken effect? also does anyone know of a trick to get btrfs to compress all my stuf (Hardware)